25452414856121 has 12 divisors (see below), whose sum is σ = 28045023839700. Its totient is φ = 23081985421440.

The previous prime is 25452414856117. The next prime is 25452414856129. The reversal of 25452414856121 is 12165841425452.

It can be written as a sum of positive squares in 2 ways, for example, as 20063331182521 + 5389083673600 = 4479211^2 + 2321440^2 .

It is not a de Polignac number, because 25452414856121 - 2² = 25452414856117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25452414856121.

It is not an unprimeable number, because it can be changed into a prime (25452414856129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257102756 + ... + 257201733.

It is an arithmetic number, because the mean of its divisors is an integer number (2337085319975).

Almost surely, 2^{25452414856121} is an apocalyptic number.

It is an amenable number.

25452414856121 is a deficient number, since it is larger than the sum of its proper divisors (2592608983579).

25452414856121 is a wasteful number, since it uses less digits than its factorization.

25452414856121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514304920 (or 514304909 counting only the distinct ones).

The product of its digits is 3072000, while the sum is 50.

The spelling of 25452414856121 in words is "twenty-five trillion, four hundred fifty-two billion, four hundred fourteen million, eight hundred fifty-six thousand, one hundred twenty-one".